MANILA - Police have beefed up security at all airport terminals in the capital following the seizure of explosives inside a parked vehicle at the Ninoy Aquino International Airport (NAIA) Terminal 3.

Chief Supt. Christopher Laxa, director of the Philippine National Police Aviation Security Group, said he has ordered more than 200 police, including those who are off duty, to secure the airport terminals.

This is an increase from the usual 175 personnel guarding NAIA's four terminals on ordinary days.

Members of the elite Special Operations Unit roamed around the terminals on Monday morning along with airport police and security guards.

Personnel with bomb-sniffing dogs also did the rounds of the terminal, including the parking area at NAIA-3 where agents of the National Bureau of Investigation intercepted the vehicle loaded with explosives.